436 HEPATIC^.. 



Pears. MS.). Jnut/. Jnbeniica, Wilson in Eng. Bot. 2, tab. 2750, 

 excl. lower half of plate (1834). 



Delin. Eng. Bot. 2. tab. 2750, pp. Husn. Hep. Gall. pi. XT. 

 fig. 124, b, c, d. 



Exsicc. G. etE. n. 163 ; C. and P. n. 143. 

 Closely cajspitose, small. Fronds more upright, crisp, much 

 folded ; mid-rib thicker, bracts more laciniate than in either of the 

 two other forms. 



Dimensions. — Capsule 2*5 mm, x 1* mm., spores "05 mm., 

 '04 mm., elaters '35 mm. x '01 mm., '2 mm. x "Ol mm. 



Hab. — In marshy sandy stations, usually on the coast. Rare. 

 1. Phillack; Hayle Sands, Cornwall, W. Curnow, 1842. 7. 

 AberlFraw, Anglesey, IF. Wilson, fruit April 1829, September 

 1830. W. H. P., 1900. 9. Southport, Lane, Dr. Carrington, 

 1863, 1865; C. J. IFihl, 1882; W. H. P. Coatham Marshes, 

 Yorks., Wm. Ijigliam, 1899. 15. Drumlie Airy, a waterfall on 

 the Noran, Forfar, C. Lyell. 



Found on the Continent (Finland, Grermany, France, Switzer- 

 land, and Italy) ; also in North America. 



Var. lejJtodesma (P allavicinia leptodesma, Tansley in Utf.). 

 Fronds |- to 1 inch long, simple or furcate, margin irregularly 

 lobed, mid-rib with two lateral rudimentary strands, perianth 

 longer and narrower than in type or var. Wilsoniana. Spores 

 light to dark brown. Elaters very light brown, very narrow, 

 bi-spiral, 8-10 spiral turns. 



Hab. — In marshy, sandy situations on the coast. Very rare. 

 I. Malahide, Br. B. Moore, D. McArdle. 



Dimensions. — Perianth 5*5 mm. x 1'5 mm., capsule 2*5 mm. x 

 1"1 mm., spores "05 mm., elaters '275 mm. x "01 mm., "2 mm. x 

 '015 mm. 



Obs. — With reference to this variety or species Professor 

 Tansley writes : " We have finished our investigation of the 

 Pallavicmia-Si/m^jhi/of/yna-Hi/nieiiophi/fon group in reference to the 

 strand of prosenchymatous cells. I was fortunate enough to get 

 living- specimens of PaUavichna LyelUi from Professor Howe of 

 ."Nev*' York as you suggested, and find that the strand is water- 



